Window screen



Oct. 8,1929.l T. c. cAsHA AET Al. y 1,730,757

wInDow SCREEN I Filed April l. 1926 j hunted Oct. 8, 192.9

UNITED STATES PATENT oFFlcE nmononn c. cnam, or om, am) Joint 'n mais, or BERKELEY, canna-cmu.;

WINDOW SCREEN Application led April 1,

This invention relates particularly to a sliding screen for a window frame that has sashes of the double-hung type slidably mounted thereon.

An object of theinvention is to rovide a screen frame torbe slidably mounte on the parting bead that separates a pair of sashes, mounted to slide past one another within a window frame; and to position the screen 1o relative to the window sashes, at a point where the screen will be most eective when the sashes are o ned.

A further o ject of the 4invention is to 1 rovide, in combination with a pair of dou- 15 le-hung window sash mounted to slide past one another within a window frame, a J- shaped parting bead to separate the said sashes and also provide a 1de way in which a screen frame can be sli ably conned. l Other objects of the inventlon are to rovide a 'screen frame for a window frame aving double-hung sash, that will be superior in point of simplicity, in expensiveness of construction, positiveness of operation, and facility and convenience in use and general eiciency.

In this specification and the annexed drawings, the invention is illustrated in the form considered to be the best, but it is to be understood that the invention is not limited to such form, because it may be embodied in other forms, and it is also to be understood that in and by the claim following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the accompanying one sheet of drawings Fig. 1 is a front elevation of a window frame having a screen constructed in accordance with our invention mounted therein.

Fig. 2 is an enlar ed vertical section taken through Fig. 1 on t e line 2 2.

Fig. 3 is an enlarged cross section taken through Fig. 1-on the line 33. y

Fig. 4 is a rspective view of a section of the screen ame to show the method of locking the screen therein.

Fig. 5 is a perspective showing a detail of the screen frame and channel guide., Y

Fig, 6 is a section taken through Fig. 5 on 5 the hne 6-6.

1926. semi m. 98,991.

In detail the construction illustrated in the drawin s comprises a window frame,A

-form a substantially rectangular structure.

The interior .and exterior of the window frame is finished in a conventional manner with the usual ca'sings, stops and other orna-v mental trim. Sash stops 6 are provided on the opposite .-side edges of the jambs 2 and 3, and parting beads 7 are interposed between the said stops. The parting beads 7 are secured on the jambs 2 and 3 midway between the sash stops in order to divide each of the opposite jambs into a pair ofsash slideways 8 and 9. The upper and lower sashes 10 and 11, respectively, are mounted in the sash slidewa s 8 and 9, said sashes constituting what isv own in the art as-double-hung windows, and each of the sashes are adapted to slide past one another in the separate slideways.

sash of the ouble-hung type, we eliminate the usual wooden partmg bead, that is interposed between t e upper and lower sash to separate the same and provide the required sash slideways, and substitute a channel or U-shaped parting bead 7, formed of pressed metal. The channel partin bead 7 is of the same thickness as the woo en partin bead, which it is to replace, and is adapte to tit into the opposite window jambs, 1n exactly the same manner that the wooden parting bead is engaged therewith.

The open side of the channel 'guideway 7 is exposed in order to receive a screen frame 13" between the matching, channel parting beads. TheA screen frame 13 may be slidably conined therein. The screen frame 13 is formed of a rectangular body of metal substantially the same size as the lower sash and between the inner edges of which the screen material 14.-4 is held. Each of the side edges of the screen frame 13, adjacent the upper an'd lower sides thereof, have springs 15 or other equivalent resilient means secured thereto. The springs 15 are arranged on the op osite side ed es of the screen frame, in or er to bear against the bottoms of the chan- In adaptin our window screen to use on nel arting beads 7, to center the screen frame wit the window o ening andto hold the frame in any selecte open or closed position. The springs also compensate for any 5 inaccuracies in alignment between the opposite sides of the window frame and allow the screen to be free in its upward or downward movements. The s ring friction will Y hold the screen frame w crever it'ma be placed and it can be easil overcome y a person of average strengt The channel parting bead 7 is continued across the under side of the lintel 4 in order to receive the head rail 17 of the screenrame when the screen is raised to the uppermost position within the window frame, thus eliminating any space or opening through which flies or bugsI might pass. The head rail 17 of the screen frame is of a thinner cross section than the.

2o side rails or the bottom rail in order to fit snugly between the meeting rails of the upper and lower sashes 10 and 11.

The rails of the screen frame are formed with a hollow cross section and each consists of a strip of metal bent midway between its side edges to form a pair of parallel walls 18 and 19 and the ed es 20 and 21 of said walls are bent inward y so as to lie one on to of the other. The bent edge 20 is provi ed with serrations 22 or saw teeth therealong, which said serrations are adapted to enter between the strands of the screen 14 to assist in drawing the said screen taut within the screen frame. The other edge 21 of the said frame section is adapted to be folded over the serrated edge 20 and to hold the screening material 14 tightly in place within the hollow sections o the screen frame.

Having thus described this invention, what we now claim and desire to secure by Letters Patent is:

A screen frame for slidable mounting between the window sashes of a window frame, comprising a plurality of rails forming the frame, and a screen secured in said rails; each rail consisting of a stri of metal bent midwa between the side e ges to form a air o spaced parallel walls and an outer at frame wall arranged in a substantially 5o U-shape cross-section, the edges of said side walls bein bent inwardly so as to lie one on the to of t e other, the lower one of said bent edges ing serrated, serrations of which are adapted to enter between the strands of the screen, the other overla pin edge preventing the disengagement of sai screen strands from said serrations.

In testimony whereof, we have hereunto setour hands at San Francisco, California,

this 23rd day of March, 1926.

THEODORE C'.4 CASHA. JOHN T. HARRIS. 

